Machine for rolling tapered metal



(No Model.) 3.Sheets-Sheet 1.

G. PROUTY. MACHINE FOR ROLLING TAPERED METAL] No. 593,907. Patented Nov.16,- 1897.

(No Model.) 3 SheetsSheet 2.

C. PROUTY. MACHINE FOR ROLLING TAPERED METAL;

No; 593,907. Patented Nov. 16,1897.

Wihwzaea THE cams PETERS co, mom-ummwusumumu, a. c.

(No Model.) s sheets-sheets.

- Q. PROUTY.

MACHINE FOR ROLLING TAPERED METAL' No. 593,907. 1 I Patented-Nov..l6,1897.

IRWIN {w auve/wtoz rrnn STATES ATENT CHESTER PROUTY, OF RIDGWAY,PENNSYLVANIA.-

MACHINE FOR ROLLING TAPERED METAL.

SPECIFICATIGN forming part of Letters Patent No. 593,907, dated November16, 1897. Application filed April 3, 1897. Serial No. 630,623- (Nomodel.)

To all whom it may concern.-

Be it known that LOHEsTER PROUTY, a citizen of the United States,residing at Ridgway, in the county of Elk and State of Pennsylvania,have invented certain new and useful Improvements in Rolling TaperedMetal; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the'same.

My invention relates to improvements in rolling tapered metal forworking the metal either in a hot condition or for cold-rolling themetal.

In my present invention I employ a templet for controlling the rolls ina peculiar way, so as to vary the thickness of the pass between saidrolls. I am aware that, broadly speaking, it has been proposed to gageand vary the thickness of the'metal by the employment of a templet orpattern-cams forming parts of rolling-mills,bu't experts in steel-makinghave condemned prior devices for rolling tapering metal by the use oftemplets, because a revolvingmetal-working roll on a running templetoperates to stretch the steel on the top side next to the roll and toruffle the grain next to the bottom roll, the templet holding the metalon the side next to it, thus producing' in the metal an open grain onone surface and a close grain on the opposite face of the work. Steelproduced in this manner is worthless for manufacture into too1ssuch ascrosscut-saws, handsaws, cutlery-blades,

and analogous articlesbecause the prepared metal does not possess thestrength requisite to stand the work required of tools of the charactermentioned. I overcome these 0bjections by using a templet in connectionwith a set of working rolls and a set of patternrolls, the formerserving to reduce or shape the metal and the latter accommodating thetemplet or pattern. Said sets of rolls are combined in a peculiar mannerto insure all of the rolls having the same peripheral speed and torender certain of the working and pattern rolls adjustable or movablesimultaneously,in accordance with the thickness or gage of the templet.A rolling-mill constructed as outlined briefly above receives the metalto be prepared and the templet at the same instant, the metal andtemplet travel between their respective rolls at. the same speed, andboth the metal and templet emerge or drop from their respective rolls atthe same time, thus imposing a minimum amount of labor on the operatorand enabling him to handle the metal and templet with ease; and theinvention further consists in the novel combination of elements and inthe construction and arrangement of parts which will be hereinaftermorefully described and claimed.

To enable others to understand my invention, I have illustrated thesamein the accompanying drawings, forming a part of this specification,and in which-- Figure 1 is a side elevation showing the working rollsconstructed to shape and reduce the metal suitable .for manufacture ofcrosscut-saws, handsaws, and cutlery articles. Fig. 2 is an endelevation thereof. Figs. 3 and 4 represent one form of templet and arolled metal plate produced by passing the templet and plate through amill embodying my invention. other rolled plates prepared by a mill andtemplets according to-my invention. Figs.

Figs. 5 and 6 areviews of plates or blanks suitable for manufacture intohandsaws and cutlery articles. Fig. 9 is a detail sectional view on theplane indicated by the dotted line 9 9 of Fig. 2. Fig. 10 is a detailview of one of the upright side frames. Fig. 11 is a detail view of oneof the journalbearings. Fig. 12 is an elevation of another embodiment ofmy rolling-mill in which each set of working rolls and pattern-rollscomprises three rolls for passing and repassing th e metal and templetsback and forth through the mill.

Like numerals of reference denote corresponding parts in all the figuresof the draw- Iteferring to Figs. 1 and 2 of the drawings, the numeral 1designates a substantial foundation or bed-plate, and 2 3 the sideframes, of my rolling-mill, the whole being firmly secured together bybolts and to a substantial foundation. The side frames are constructedin a novel way to receive peculiarlyformed journal-bearings that sustainthe sets of rolls in operative relation to each other between said sideframes.

The working rolls are indicated at 4 5 in the drawings, and'the patternor templet rolls are indicated at 6 and 7. The u pper working roll 4 andthe lower pattern-r0117 are stationary within the side frames so far asregards any vertical adjustment, but they are free to rotate on theiraxes, while the working roll 5 and pattern-roll 6 intermediate be tweensaid non-adjustable rolls 4 7 are capable of vertical sliding movementand of rotary motion in their journal-boxes, the extent of saidvertically-slidable motion of the intermediate rolls being controlled bythe thickness or gage of the templet.

The upper stationary working roll 4 has its shaft or trunnions journaledin a pair of stationary boxes 4, the adjustable working roll 5 isjournaled in vertically-slidable boxes 5, the adjustable pattern-roll 6is journaled in the sliding boxes 6, and the lower patternroll 7 isjournaled in the stationary boxes 7'. \Vhile the boxes 4 for the upperworking roll are stationary under normal conditions, yet they have alimited vertical adjustment under the influence of suitable manualdevices for the purpose of moving the upper roll 4 toward or away fromthe roll 5 under certain conditionsas, for instance, when it is desiredto vary the depth of the pass between the working rolls to produce steelplates or blanks of different thicknesses or gages.

Each side frame 2 3 is preferably cast in the form shown by Fig. 10, andit has a longitudinal slot 10, which, however, does not open througheither end of the frame. This slot forms the guideway for the j onrnal-boxes, and to hold the boxes to slide true in said frame to securethe best results by the action of the rolls I construct the guide-slotwith the beveled ribs 11 and form the ends of the journal-boxes withbeveled bearing-faces 12, the bevels of the bearing-faces in thejournal- 'boxes corresponding to the beveled faces of said ribs or wallsin the guideway of the side frame. This construction of the side frameinsures true working of the journal-bearings with a minimum vibration orplay either laterally or endwise, and in case the faces of the guidewayor journal-boxes become worn to such an extent as to produce imperfectwork the journal-boxes may be withdrawn and said faces of the side framemay be planed true and other boxes adjusted in the frame to make theparts resume their true relation, thus reducing the cost of repairs. Tofacilitate the introduction or withdrawal of the journal-boxes to orfrom the guidewayin the frame, the slot 10 is enlarged at itsextremities, as at 10, the width of each enlargement being equal to orgreater than the space between edges of the slot throughout the majorportion of its length, and said beveled ribs or bearing-faces beingarranged centrally with relation to said end enlargements, whereby thejournal-box may be slipped into the enlargement and arranged free fromthe ribs or bearing-faces, so as to easily withdraw said box from theside frame or replace it therein.

The head of each side frame has a vertical central threaded socket 13,in which is fitted an adjusting and holding screw 14, and said screws inthe side frames 2 3 engage with the journal-boxes 4 of the upper workingroll 4, so as to sustain the latter normally in a fixed position so faras regards vertical adjustment with relation to the other working-roll5, but said screws 14 also serve to adjust the roll 4 relatively to theroll 5 when it is desired to change the gage or thickness of the metalto be reduced by and between said rolls 4 5. The lower templet-roll '7is rendered non-adjustable by fastening its boxes 7 to the side framesin any suitable way.

It will be understood that the rolls 5 0 and their complemental boxes 56 are adjustable freely within and between the side frames and the topand bottom rolls, and that said slidable bearings 5 (3 serve to maintainthe rolls 5 G in proper relation to the rolls 4 7 and to each other,because the boxes 5 6 areguided in the side frames in a manner toovercome any tendency to lateral or endwise play therein. Consequentlythe axes of all the rolls are parallel to each other, so as to attainthe best results in rolling the metal between the working rolls 4 5.Normally the boxes of the adjustable pattern-roll 6 rest upon the boxesof the roll 7, and the boxes of the roll 5 rest upon the boxes of theroll (3, but spaces (indicated at 15) are provided between the boxes ofthe rolls 4 5 to provide for proper movement of the rolls 5 (3 toward orfrom the rolls 4 7 under the control of the tcm plet as it passesbetween the pattern-rolls 6 7.

I prefer to divide each journal box or bearing horizontally, so as toform two sections, and to clamp said sections rigidly together bysuitable bolts, so that the box or hearing will properly confine andsupport the roll shaft or journal. journal is extended through thejournal-box, and said protruding ends of the shafts are geared togetherby intermeshin g gears, (indicated at 16,) which are so proportioned andconstructed as to operatively connect all the rolls no matter what theirrelative adj ustment may be and to propel or drive all the rolls at thesame speed, whereby the templet and work passing independently betweenseparate set-s of rolls are caused to travel at the same speed.

-The pattern-rolls are preferably of cylindrical form and they lie inthe same vertical plane with their axes parallel to each other. As shownby Fig. 1, the working rolls taper from their middle toward their ends,so that they are of greater diameter at the middle than at the ends.This form of the working rolls insures the production of a blank orplate with a thin median portion and thickened edges suitable for makingtwo saws or a series of cutlery-blades, such as disclosed by my priorapplication for a patent filed March 3, 1896, Serial No. 581,658, and asshown in my patents for erosscut-saws dated One end of each roll shaftor.

November 11, 1890, No. 440,253; October 20, 1891, No. 461,509, andAugust 4, 1896, Nos. 565,390 and 565,298, but this shape of the workingrolls is not material to my present invention, because the shape of therolls may be varied to suit the requirements of the work. Thus if steelplates of uniform gage are desired I may employ cylindrical rolls ofuniform diameter, or if plates or bars of irregular cross-sectionalcontour are desired the faces of therolls are shaped accordingly, aswhen it is desired to roll out plates suitable for making ax-blanks.Again, the working rolls may be provided with segmental or' angulargrooves or channels arranged in alinement to form passes suitablefor rolling round or angular metallic plates or bars. I In thisconnection the construction of the side frames and the journal-boxesforms an important -20 feature of my invention, because suchconstruction enables the rolls to be changed quickly, according to theneeds of the service.

My present invention is directed more particularly to that feature whichcontemplates the production by the rolling operation of plates or blankswhich vary in gage or thickness crosswise or lengthwise, either or both.In the fabrication of metal for manufacture into crosscut-saws of thecharacter disclosed by my prior patents to which reference has-- beenmade it is essential that the saw-blank shall be produced having itsworking edge thicker at its middle than at its ends, while the back edgeshall be thinner at its middle the blank it' is desired to produce-th-atis to say, where the templet is thickest it produces in the saw-blankthe thinnest portion or highest gage, and, vice versa, where the templetis thinnest it produces the thickest portions or lowest gage in thesaw-blank. This feature is brought out by the comparative views Figs. 3and 4 of the drawings, in which the numeral 20 designates the templet,and 21 the saw-blank produced by passing the metal and templet betweenthe sets of working and templet rolls 4 5 and 6 7, respectively, of themill. In Fig. 3 the templet is shown as having the gage '14 at its endsand the gage 12 at its middle, but the saw-blank produced by passing themetal sheet between the shaped working rolls has the varying thicknessesindicated by the gage-numbers in Fig. 4. Of course the gage or thicknessof the templet may be changed to suit the desired tapers or thicknessesit is desired to produce in the saw-blanks, and in Figs. 5 and 61 haveshown various kinds ofplates with thicknesses or gages distributed indifferential order, as indicated bythe gage-numbers in the' respec tivefigures.

While I have specifically shown and mentioned the manufacture ofcrosscut saw blanks of varying gages throughout the length and widththereof, yet it is to be understood that my invention is alsoapplicable, by the employment of suitable templets, tothe manufacture oftapered sheet-steel suitable for making blanks for ,manufacture intohandsaws and cutlery articles, and in Fig. 7 I show by dotted lines howa series 'of handsawblanks may be produced by cutting out the metal, andFig. suitable for butchers knives may be produced from sheet-steel madeaccording to my invention, it being of course understood that suchblanks vary in gage or thickness at different points and as indicated bythe gagenumbers in the different figures.

While I prefer to construct my taper rolling-mill with a pair of workingrolls andanother pair of templet-controlled rolls, I do not wish to beunderstood as strictly limiting myself to the precise number of rollsused in the mill so long'as the number of rolls used is not less thanfour, which I regard as essential for the proper accommodation of thetemplet and the metallic sheet to produce the blank desired. In Fig. 12I have shown my rolling-mill constructed with a greater'number of rollsproper for passing and repassing the blank and templet back and forthbetween the two sets of rolls to effect the gradual reduction andshaping-of the blank. In this style of mill using a set of three workingrolls and another set of three templet-rolls the passes between the twoupper working rolls and the two upper templet-rolls are of greater.width than the passes between the second and third working rolls and thesecond and third templet rolls, respectively. The work and templet arefed in one direction between the first and second rolls of theirrespective sets and then passed in the oppo: site direction through thepasses between the second and third rolls of their respective sets ofrolls, thus reducing and shaping the work progressively by successivepasses back and forth between the rolls.

The templets which I'employ are of a length equal to the full length ofthe blank or sheet 7 the operation of adjusting the intermediate workingand templet rolls, and this treatment of the templet is especiallynecessary when the mill is to be used for cold-rolling metallic sheets.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination with a framing, of a set of coacting working rolls,and another set of coacting templet rolls independent of the workingrolls and arranged to be adjusted by a templet fed therethrough and tovary the width of the pass between the working rolls according to thedegree of adjustment afforded by the varying thicknesses or gages of thetemplet, as and for the purposes described.

2. The combination with a framing, of a set of coacting working rolls,another set of coacting teniplet-rolls independent of the workin g rollsand in operative relation to the working rolls to vary the width of thepass therebetween according to the different gages or thicknesses of thetemplet, and means for giving uniform peripheral speed to all the rollsof the said sets of working and templet rolls, as and for the purposesdescribed.

3. The combination with a framing, of a set of coacting working rollsone of which is adjustable with relation to the other, another set ofindependent coacting templet-rolls, one occupying a non-adjustableposition and the other arranged for adjustment in connection with theadjustable working roll, and gearing for operatively connecting all ofsaid rolls to give a uniform peripheral speed thereto, as and for thepurposes described.

4. The combination with a framing, of a set of coacting rolls the upperone of which has its boxes held in place by suitable means and the otherroll having its boxes mounted in said frame to slide freely therein,another set of coacting templet-rolls the lower one of which likewisehas its boxes stationary within the frame and the other roll mounted infreelyslidable boxes, the latter arranged to raise or lower theadjustable working roll according as the adjustable templet-roll israised or lowered by the varying thicknesses or gages of a templet fedbetween the templet-rolls, as set forth.

5. The combination of a set of positivelydriven working rolls, anotherset of templetrolls independent of, and driven at the same peripheralspeed as, the working rolls and arranged to adjust the working rolls atdifferent periods, and a templet of variable thicknesses or gagesarranged to be fed through the templet-rolls, substantially asdescribed, for the purposes set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHESTER PROUTY.

Vitnesses:

A. E. ENT, D. E. ELLIOTT.

